CustomTextView

attrs.xml

<declare-styleable name="CustomTextView">
        <attr name="customFont" format="string" />
</declare-styleable>

gistfile1.txt

public class CustomTextView extends TextView {

    static Typeface defaultTypeface = Typeface.createFromAsset(App.getAppContext().getAssets(),
            App.getAppContext().getString(R.string.font_regular));

    public CustomTextView(Context context) {
        super(context);
        setTypeface(defaultTypeface);
    }

    public CustomTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        setCustomFont(context, attrs);
    }

    public CustomTextView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        setCustomFont(context, attrs);
    }

    private void setCustomFont(Context ctx, AttributeSet attrs) {
        TypedArray a = ctx.obtainStyledAttributes(attrs, R.styleable.CustomTextView);
        String customFont = a.getString(R.styleable.CustomTextView_customFont);
        setCustomFont(ctx, customFont);
        a.recycle();
    }

    public boolean setCustomFont(Context ctx, String asset) {
        Typeface tf;
        try {
            if (asset != null) {
                tf = Typeface.createFromAsset(ctx.getAssets(), asset);
            } else {
                tf = defaultTypeface;
            }
        } catch (Exception e) {
            return false;
        }
        setTypeface(tf);
        return true;
    }

}